cla_gerpvgrw.f(3) LAPACK cla_gerpvgrw.f(3)NAMEcla_gerpvgrw.f-
SYNOPSIS
Functions/Subroutines
REAL function cla_gerpvgrw (N, NCOLS, A, LDA, AF, LDAF)
CLA_GERPVGRW multiplies a square real matrix by a complex matrix.
Function/Subroutine Documentation
REAL function cla_gerpvgrw (integerN, integerNCOLS, complex, dimension(
lda, * )A, integerLDA, complex, dimension( ldaf, * )AF, integerLDAF)
CLA_GERPVGRW multiplies a square real matrix by a complex matrix.
Purpose:
CLA_GERPVGRW computes the reciprocal pivot growth factor
norm(A)/norm(U). The "max absolute element" norm is used. If this is
much less than 1, the stability of the LU factorization of the
(equilibrated) matrix A could be poor. This also means that the
solution X, estimated condition numbers, and error bounds could be
unreliable.
Parameters:
N
N is INTEGER
The number of linear equations, i.e., the order of the
matrix A. N >= 0.
NCOLS
NCOLS is INTEGER
The number of columns of the matrix A. NCOLS >= 0.
A
A is COMPLEX array, dimension (LDA,N)
On entry, the N-by-N matrix A.
LDA
LDA is INTEGER
The leading dimension of the array A. LDA >= max(1,N).
AF
AF is COMPLEX array, dimension (LDAF,N)
The factors L and U from the factorization
A = P*L*U as computed by CGETRF.
LDAF
LDAF is INTEGER
The leading dimension of the array AF. LDAF >= max(1,N).
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 99 of file cla_gerpvgrw.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 cla_gerpvgrw.f(3)
